Babbitting machine



Nov. 6, E28.

T. H ORR BABBITTING MACHINE File M y 15, 1926' 4 Sheets-Sheet 1 INVENTOR .TEOrl;

ATTORNEYS T. H. ORR

BABBITTING MACHINE Filed May 15. 1926 4 Sheets-Sheet 2 Nov. 6, 1928. 1

WITNESSES w 2 INVENTOR M. Orr, K /Z 2f ATTORNEYS Nov; 6, 1928. 1,690,992

* T. H. ORR

BABBITTI-NG MACHINE Filed May 15, 1926 4 Sheets-Sheet 4 WITNESSES I INVENTQR I 2 g Z'H r ATTORNEYS machine for babbitting a connecting rod and i Patented Nov. 6, 1928.

UNITED STATES THOMAS H. can, or OKMULGEE, OKLAHOMA.

E T. OFFICE],

BABBITTING MACHINE.

. Application filed May 15 This invention relates to a method of and main bearing or the like.

The object of the invention is to provide a method and machine of this character which is especially although not necessarily de signed for use in rcbabbitting the connecting rod and main bearings of automobiles and which greatly facilitates the babbitting op eration and carries out the babbitting operation in such manner that the new Babbitt bearing provided is clear of all dross and burnt alloys in. the babbitt and which eliminates pits and flaws in thenew Babbitt bearings provided.

A further object is to provide a method and'machine of this character which is of simple and durable construction, reliable and effective in operation, easy to control and comparatively simple and inexpenslve to manufacture.

Other objects and advantages reside in certain novel features of the construction, arrangement and combination of parts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings, forming a part of this specification, and in which Figure 1 is a perspective View showing machine embodying the present invention, I

Figure 2 is a View thereof in front elevation, I I

Figure 3 is a plan view of themachine. parts being broken away for the sake of illus-.

tration,

Figure 4 is a view in longitudinal vertical section on the line 4+4 of Figure 3, parts being shown in section for the sake of illustration,

Figure 5 is a sectional view on the line 5'5 of Figure 3, parts being shown in elevation for the sake of illustration,

Figure 6 is a sectional view on the line 6-6 of Figure 5,

Figure 7 is a group View in perspective of the parts shown in Figure 6,

Figure 8 is a detail View of one of the forks engageable with the clamp heads,

Figure 9 is a plan view of the funnel,

Figure 10 is a sectional view thereof, and

Figure 11 is a view illustrating the use of I the device in rcbabbitting one of the main bearings.

Referring to the drawings it will be seer that the machine comprises a suitable 1926. Serial No. 109,379.

frame, designated generally at 1, the frame'l having a base plate 2 and an upstanding side plate'3, the plates 2 and 3 being suitably notched and cut away as'may be necessary to accommodate the various operating parts of the machine. Bearing posts 4 and5 are provided and have reduced extensions 6 at their lower ends, the extensions 6 extending through holes in the base plate 2 of the frame and being threaded to co-act with nuts-7 whereby the posts are secured to the frame. Lock washers 8 may be interposed between the nut 7 and the plate 2 to lock the posts 1 and 5 in position. A centering screw 10 is threadedly engaged with the post 4 and has a smooth and pointed or tapered centering end 11 at its inner end and a handle member 12 at its outer end. A similar centering pin, designated generally at 13, is rotatablymounted on the post 5, the centering screw 13 having a hand lever 14: fixed thereto and having its inner smooth and tapered end 15 transversely slotted toreceive a key 16 which is fitted in a key-way 17 provided in one end of the mandrel, designated generally at 18. In this way the screw-13 is so connected to the mandrel that whenever the lever 14 is turned to turnthe screw the mandrel 18 will also be turned. As the key 16 floats in the slot of the screw 13 it does not interfere with the centering action of the screw 13. The key 16 is tapered and the portion of the slot 17 which it engages is correspondingly tapered to prevent accidental displacement of the key. Of course, the smooth pointed end 11 of the screw 11 engages a correspondingly formed centering recess 19 provided in the end of the mandrel opposite the end engaged by the Screw 13. With this arrangement the mandrel 18 may be readily taken from the screws by turning the screw 12 to disengage it entirely'fromthe adjacent end of the mandrel. This will permitthe mandrel to move axially-to disengage it from the screw 13 to such an extent as to permit its transverse movement with respect to the screw 13 to entirely dismount the mandrel from the screws. When the mandrel 18 is moved transversely the extreme outer portion of the pointed end of the screw 13 passes through the slot'17. By a reverse operation the mandrel may be replaced on the screws.

As clearly shown in the drawings the mandrel has end sections of cylindrical form having smooth peripheries. Between the end sections the mandrelis of reduced diameteras indicated at 21 and is partially cut away, as at 22. The mandrel is cut away as only half of a bearing is babbitted at a time and consequently only half of the peripheral or angular extent of the mandrel is actually used to shape and form the babbitt. At the center of the central portion or section of the mandrel a transverse tapered opening 23 is provided and it is through this central opening that the babbitt is pourerh as will be hereinafter more fully described. A pair of sleeve-like clamping heads 25 are snugly fitted on the end sections of the mandrel in such manner that they maybe slid back and forth thereon. Each clamping head has a semi-circular extension 26,

. the extensions 26 of the clampin heads confronting each other in the assembly. The adJacent end portions of the extensions 26 are provided with grooves 27 and in the center of each groove 27 an upstanding semi-circu larrib 28 provided. in each groove 2? a reversible clamping and closing element 29 is provided and consists of a semi-circular and arcuate web 30 having a groove 31 to receive the rib 28 and having oppositely ClllGCtGC flanges 32. The clamping and closure elements 29 are held engaged with the ribs of their grooves by means of a combined closure and holding plate, designated generally at 85, the plate 35 being litted flush the flat face of the cutaway portion22 of the mandrel and being secured in any one of a number of adjustable positions by means of screws 36 threaded into the mandrel and extending through slots 37 in the plate 35.

Means is provided for shifting the clamp-- ing heads 25 back and forth on the sections 20 and for holding them. in set position. This means includes a rotatable shaft 40 having oppositely threaded end sections ll and 4-2,

s the extremities of the sections ii and d2 beedly engaged with the sections ll and ing smooth and rotatably mounted. in hearing brackets 43 provided on the plate 3 of the frame. A handle Pi is provided for turning the shaft 40. Nuts 45 and -16 are threadd-2, respectively, of the shaft d0. The nuts 45 and 46 are pivotally connected to levers l? which have yokes d8 at the ends thereof opposite their pivotal connection tothe nuts and 46. The arms of the yolres are pivotally connected as at A9, to semi-circular or semiannular collars 50, the collars 50 being operatively fitted in annular grooves 51 provided in the sleeve-like heads 25. A post 52 is provided on the frame between the levers 4th the to provide spaced arms 5? and 58.

up against carried on the shaft and in a bearing ring 61 which is a driving t in an opening 62 provided the arm 5?. On the portion of the shaft 59 which is located between the arms 57 and 58 eccentrics 63 and 6d of opposite throw are fixed by means of a key 65 driven into a hey-way ($6 in a shaft and into mating hey-ways o? in the eccentric discs (see F 2'). This key (35 also se ves to in the bearing 2Y6 GO to the shaft 59. Links (38 and 69 are rovid d and have openings 70 and 71 in which the eccentric discs 63 and 6 t are operatively received. The ends of the links 68 and 69 opposite those mounted on the eccentric discs are pivotally connected, as at 72, to lugs 73 pivoted to the levers 47, asindicated at 78. On the portion of the shaft 59 that projects rearwardiy beyond the arm 58 a lock lever orhand lever is fixed. When the lock lever T 5 is turned in one direction it rotates the shaft 59 to cause the eccentric dicsc 63 and Get to shift the eccentric links 38 and oil in opposite directions and away from the axis of rotation of the shaft 59. This shifts the levers t? away from each other and spreads or shifts the clamping heads away from each other. When the handle lever 75 is moved in an opposite direction, the eccentrics operate to draw the levers i? and consequently the clamping heads 25 together. The nuts i5 and d6 constitute adjust-able fulcrums for the levers 47 since when the lovers 4? a e shifted by moving the lever '35 they move or fulcrum about their p *otal connection to these nuts 625 and 6. The nuts a5 and so when shifted along the shaft L0 change the position of the clamping heads since at such time the levers 4LT swing about the pivotal connection of the lugs 73 with the levers ll. This is an especially desirable fea ture in adapting thedevice for use with different sizes of connecting rods as this enables the clamping heads to be positioned to be quickly shifted into and out of engagement with the connecting rod by means of th lever T5. V

Tn employing thev machine to rebabbitt a connecting rod bearing the proper size of mandrel i se ected for the connecting rods to be rebabbitted. it is to be understood that the maudrels with their clamping means are led in sets to take the connecting rc-ds us cars. Usually only live sets are ary lO'lZEilKB all'of the various sizes of connecting rods. When the proper mandrel has been selected and placed in the machine it positioned shown in Fig. l and the connecting rod is then positioned thereon as strated in Figure 1. By using a rule or scale the connecting rod centered The connecooening 23 of the mandrel. g 1c is n the opposite side of the mandrel from the ate and thus plate is adyusted to close the space between thcinner faces or the connecting rod and the mandrel. The

plate is secured in adjusted position by tightening up the screws 36. When the connecting rod has been properly centered it is clamped in position by manipulating the levers 44 and 75 and when the connecting rod is clamped in position the side edges of its flanges are firmly engaged by the flanges 32 of the closure and clamping elements 29.

WVheu the connecting rod is clamped in position a centering device, designated generally at 80, is brought into engagement with the same and secured in such position so that after the first connecting rod has been properly centered by use of the rule or'scale the others may be centered by engagement with the centering device. As shown in-the drawing the centering device comprises an angular finger 81 having a slotted portion 82 ad justably clamped by a screw 83 to the plate 35. The finger 81 also has a connecting rod engaging portion 82. The connecting rod. engaging portion 82 presses against the outside oi the bolt hole of the properly centered connecting rod.

After theeonnecting rod has been centered and clamped the lever 14? isgrasped to turn the mandrel over to position the connecting rod as shown in Figure 2. A funnel, designated generally at 85, is then mounted inthe opening 23 of the mandrel. As shown in Figs. 4 and. 5 the plate 35 has an opening to permit of the funnel being inserted in the openings of the mandrel. The tunnel 85 mmprisesa tapered tubular body 86 having a crescentshaped opening 8? in its lewer end. The edge of the crescent-shaped opening is sharpened. to provide cutter 88. The upper end the funnel 85 is entirely open. Adjacent the upper end of the tubular body handle 89 connected thereto. The'moltenhabhitt is pourcd'in through the tunnel and flows in through the center of the mandrel and centrally into the bearing} then passes to the ends of the bearing. Molten habbitt is poured into the funnel until the funnel is completely filled. This subjects the babbitt in the bearing to the pressure ofa considerable head of habbitt and also has the advantage of ailording a surface eriteriorly of the bearing to which the dross and burnt alloys in the babbitt arise.

At this'point it will be noted that the in vention involves a novel method which conlists in introducing the moltenbahbitt into the central part of the bearing and permitt 7 118 babbitt to flow to the ends thereof. This is the principal step in the method but an auxiliary step of considerable importance that the ends of the babbitt cool and exert equal pulls upon the'hot central portion cracking as would be the case were the babbitt fed into the ends of the bearing.

After the b abbitthas cooled sufiiciently the handle 89 is utilized to rotate the funnel which brings the edge 88 into action to cause it to cut oil the babbitt in the funnel from the babbitt of the bearing. Then the levers 44 and 7 5 or either may be utilized to disengage the clamping heads from the connecting rod. After this it the connecting rod still adheres to the mandrel and it usually will, due to the adhesion of the new babbitt thereto, itis removed by means or" an ejector which consists of a lever 90 pivoted, as at91, on the arm 57 and having an ejecting linger 92 pivotally connected thereto, as at i 3. The ejecting finger 93 is arranged to extend down through the opening 23 of the mandrel. when the lever 90'is swung downwardly. The

lever 90 is normally held in an upright; inoperative position by means of a spring catch 9% provided at the: upper end of a supportmy; red 95.

and for rehabhitting line shaft boxes, lathes, shapers, planers, or the like. In fact the machine may be used for rebabhitting any bearing that is made in halves. In Fig. 11 the machine is shown in use for rebel hitting the main bearing of the cylinder block B. 'At such a time only the mandrel is employed, the mandrel. being taken ironrthe centering screws. Of course, in conjunction with. the mandrel 18 the. clamping sleeves and the funnel 85 are employed. A somewhat larger plate than the plate is the plate e1nployed being designated at 100 and being fastened by bolts or cap screws tothe engine block and to the mandrel. The habhitt is introduced through the funnel 85 as before and the lower open end of the funnel proh jects down through an opfning provided therefor in the plate 100 and throngh an opening 1 the mandrel.

I claim 1. The herein described me hod of rehahbitting bearings which consists in introducing molten babbitt into the center o'l 'thc bearin and permitting it to low to the rnds thereor and sub1ectmg the Pahlntt comtro+ dueed to a considerable head of molten bahbitt whereby the bahbitt which flows to the ends. of t-e bearing 1S adapted to exert equal pull upon the hot. central portion and th head pressure or the molten baboitt adapted to withstand pulling without pitting or cracking.

2. The herein described method of rebahbitting hearings which consists in introlflll ducing molten babbitt into the center of the bearing and permitting it to flow to the ends thereof and subjecting the babbitt so introduced to a considerable head of molte babbitt whereby the babbitt which flows to the ends of the bearing is adapted to exert equal. pull upon the hot central portion and the head pressure of the molten babbitt adapted to withstanding pulling without pitting or cracking, said head of molten babbitt having a surface above and exteriorly ot' the bearing to which the dress and impurities in the babbitt may flow.

3. A machine for rebabbitting bearings comprising a mandrel having an opening adapted to be located substantially centrally ofthe bearing to be rebabbitted, means for closing the ends'of the bearing, and means for supplying babbitt through the opening of the mandrel to the bearing.

i. A machine for rebabbitting bearings comprising a mandrel having an opening adapted to be located substantially centrally oi' the bearing to be rebabbitted, means for closing the ends of the bearing, means for supplying babbitt through the opening of the mandrel to the bearing, and ejecting means for displacing the babbitt bearing Tom the mandrel, and comprising an ejecting lever having a'finger adapted to operate through the opening of the mandrel.

5. Ejecting mechanism for use in displacing babbitted connecting rod bearings from the mandrels on which they are rebabbitted and comprising a lever having atinger extendable through the openingin the mandrel.

6. Ejecting mechanism for use in displacing babbitted'connecting rod bearings from the mandrels on which they are rebabbitted and comprising a lever having a finger extendable through the opening in the mandrel, and means for normally holding the lever ii inoperative position. 7

7 A machine for rebabbitting bearings comprising a mandrel having an opening adapted to be centrally disposed with the bearing to be rebabbitted. heads slidably mounted on the mandrel and having elements e'ngageable with the ends of the bearing to be rebabbitted, and means for shifting the heads back and forth on the mandrel.

8. A machine for rebabbitting bearings comprising a mandrel having an opening adapted to be centrally disposed with the bearing to be reba-bbitted, heads sidably mounted on the mandrel and having elements engageable with the endsoii the bearing to be rebabbitted, means for shifting the heads back and forth on the mandrel and comprising a rotatable shaft having oppositely threaded portions, nuts engaged with he threaded portions, levers pivotally connected to the nuts and having operative connection with the heads, and means connected with the intermediatelportions oi the levers for shifting the same about the nuts as fulcrums.

9. A machine for rebabbitting bearings comprising a mandrel having an opening be centrally disposed with the to be rebabbitted, heads slidably mounted on the mandrel and having elements engageable with the ends or the bearing to be rebabbitted, means for shifting the heads Jack and forth on the mandrel and comprising a rotatable shaft having. oppositely threaded portions, nuts engaged with the threaded portions, levers pivotally connected to the nuts and having operative connection with the heads, means connected with the intermediate portions of the levers tor shifting the same about the nuts as tulcrums and in cluding manually operable eccentrics and links operated by the eccentrics and pivotally connected to the levers.

10. A machine for rebabbitting bearings comprising a mandrel having a transversely extending opening adapted to be positioned centrally ot the bearing to be robabbitted.

11. A machine for rebabbitting bearings comprising a mandrel having a transversely extending opening adapted to be positioned substantially centrally 01": the bearing to be rebabbitted, heads slidably mounted on the mandrel and having reduced clamping extensions, combined ciamping and closure elements mounted on said extensions, means for shifting the heads of the mandrel and holding them in adjusted position, a plate engageable with said reduced extensions, and means for releasably securing he plate in any one of a numberof adjusted positions to the mandrel, the plate having an opening registering with the opening in the mandrel.

12. A machine for rebabbitting connecting rod bearings comprising a mandrel having a reduced central portion provided with atransversely extending opening designed to be positioned substantially centrally of the bearing, sleeve-like heads slidably fitted on the end portions of the mandrel and having semi-circular extensions provided at their confronting ends with grooves the grooves having upstanding arcuate ribs therein, semicircular clamping and closure elements fitted in the grooves and comprising webs having" grooves receiving the ribs, the webs having oppositely directed flanges, a plate o ageable with the semi-circular extensions and with the combined closure and clamping ele ments, means for securing the plate to the mandrel in any one of a plurality of adjusted positions, the plate having an opening registering with the opening of the mandrel, the plate co-acting with the combined closure and clamping elements to confine the babbitt in the bearing.

13. A machine for rebabbitting bearin s comprising a mandrel having a transverse y extencing opening adapted to be positioned substantially centrally of ti e bearing to be the plate having an opening registering with rebabbitted, heads slidably mounted on the mandrel and having reduced clamping extensions, combined clamping and closure elements mounted on said extensions, means for shifting the heads of the mandrel and holding them in adjusted position, a plate engageable with said reduced extensions, means for releasably securing the plate in any one of a number of adjusted positions to the mandrel, the plate having an opening registering with the opening in the mandrel, and a centering device mounted on the plate.

14:. A machine for rebabbitting bearings comprising a mandrel having a transversely extending opening adapted to be positioned substantially centrally of the bearing to be rebabbitted, heads slidably mounted on the mandrel and having reduced clamping exten sions, combined clamping and closure ele ments mounted on said extensions, means for shifting'the heads of the mandrel and holding them in adjusted position, a plate engageable with said'reduced extensions, means for releasably securing the plate in any one of a number of adjusted positions to the mandrel,

the opening inthe mandrel, and a centering device mounted on the plate and comprising an angular finger adjustably secured to the plate. v 15. A machine for rebabbitting bearings comprising a frame having a bearing post tending opening designed to be positioned substantially centrally of the bearing to be rebabbitted, clamping heads slidably mounted on the mandrel and co-operable with the ends of the bearing to be rebabbitt-ed, a plateengaged with the mandrel and with the bear- 7 ing, means for securing the plate to the mandrel, and means tor'shifting the heads on the bearing and for holding them in adjusted position.

16. A machine forrebabbitting bearings comprising a mandrel having a transversely extending opening through which the babbitt is to be introduced into the bearing, and means for closing the ends of the bearing.

17. A machine for rebabbitting bearings comprising a mandrel having a transversely extending opening through which the babbitt is to be introduced into the bearing, means for closing the ends of the bearing, and a plate co-operable with said 'last'mentioned means and with the mandrel to confine the babbitt" in the bearing. 7 THOMAS H. ORR. 

